27 February 2014 Effective receiving area of the antenna-coupled terahertz detector
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Abstract
In order to accurately characterize the radio frequency (RF) responsivity of the antenna-coupled detector in the terahertz (THz) band, we introduce an iterative deconvolution algorithm to extract the effective receiving area. We use this method to characterize an antenna-coupled Nb 5 N 6 microbolometer as an example. The effective receiving area is approximately 0.7  mm 2 , which is 7.4 times larger than the physical area of the detector. The RF responsivity of the Nb 5 N 6 microbolometer is 480  V/W at 0.28 THz, including the effect of the antenna coupling and the substrate interference. This work offers an effective way to characterize antenna-coupled THz detectors and to analyze the element-to-element spacing along two orthogonal directions in THz focal plane array chips.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Qingkai Mao, Qingkai Mao, Xuecou Tu, Xuecou Tu, Lei Xu, Lei Xu, Chao Wan, Chao Wan, Lin Kang, Lin Kang, Jian Chen, Jian Chen, Peiheng Wu, Peiheng Wu, } "Effective receiving area of the antenna-coupled terahertz detector," Optical Engineering 53(2), 023103 (27 February 2014). https://doi.org/10.1117/1.OE.53.2.023103 . Submission:
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